172106297 has 4 divisors (see below), whose sum is σ = 187752336. Its totient is φ = 156460260.

The previous prime is 172106293. The next prime is 172106299. The reversal of 172106297 is 792601271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 172106297 - 2² = 172106293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172106293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7823003 + ... + 7823024.

It is an arithmetic number, because the mean of its divisors is an integer number (46938084).

Almost surely, 2^172106297 is an apocalyptic number.

It is an amenable number.

172106297 is a deficient number, since it is larger than the sum of its proper divisors (15646039).

172106297 is a wasteful number, since it uses less digits than its factorization.

172106297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15646038.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 172106297 is about 13118.9289578075. The cubic root of 172106297 is about 556.2443168716.

The spelling of 172106297 in words is "one hundred seventy-two million, one hundred six thousand, two hundred ninety-seven".